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  In 1990 the Glassy Winged Sharpshooter was introduced to California.
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  Large outbreak of Pierce's Disease, a fatal disease of grapevines caused by the Glassy Winged Sharpshooter, spread throughout Southern California.
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  In 1998 and 1999 high populations of the Glassy Winged Sharpshooter were noticed on citrus plants and vineyards were seen in southern Kern County, California.